Mailman 3 November 2002 - Twisted

[Twisted-Python] xmlrpc
by lals;dfjsd 13 Nov '02

13 Nov '02

I am trying the examples in www.xmlrpc.com with twisted matrix but I have hit a wall I hope that somebody can give me a hand. I am trying to call the method from my xml ... My xml code : <?xml version="1.0"?> <methodCall> <methodName>examples.tryone.Echoer.echo_something</methodName> <params> <param> <value>Name</value> </param> </params> </methodCall> My xmlrpc server code : #!c:\python22\python.exe from twisted.web import xmlrpc from twisted.internet import defer import xmlrpclib class Echoer(xmlrpc.XMLRPC): def echo_something(self,name): return name def main(): from twisted.internet.app import Application from twisted.web import server app = Application("xmlrpc") r = Echoer() app.listenTCP(7080, server.Site(r)) app.run(0) if __name__ == '__main__': main() The error I get : web.Server Traceback xml.parsers.expat.ExpatError: no element found: line 1, column 0 I a newbie at this so please forgive me if what i am doing is like really stupid or i am asking a dumb question. Thanks

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[Twisted-Python] xmlrpc
by lals;dfjsd 13 Nov '02

13 Nov '02

I am trying the examples in www.xmlrpc.com with twisted matrix but I have hit a wall I hope that somebody can give me a hand. I am trying to call the method from my xml ... My xml code : <?xml version="1.0"?> <methodCall> <methodName>examples.tryone.Echoer.echo_something</methodName> <params> <param> <value>Name</value> </param> </params> </methodCall> My xmlrpc server code : #!c:\python22\python.exe from twisted.web import xmlrpc from twisted.internet import defer import xmlrpclib class Echoer(xmlrpc.XMLRPC): def echo_something(self,name): return name def main(): from twisted.internet.app import Application from twisted.web import server app = Application("xmlrpc") r = Echoer() app.listenTCP(7080, server.Site(r)) app.run(0) if __name__ == '__main__': main() The error I get : web.Server Traceback xml.parsers.expat.ExpatError: no element found: line 1, column 0 I a newbie at this so please forgive me if what i am doing is like really stupid or i am asking a dumb question. Thanks

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[Twisted-Python] Fixes for tapconvert
by Samuel Bronson 11 Nov '02

11 Nov '02

This cleans up --typein=guess, and fixes problems with a couple of the Loader classes which I noticed while testing my other changes. --SamB Index: twisted/scripts/tapconvert.py =================================================================== RCS file: /cvs/Twisted/twisted/scripts/tapconvert.py,v retrieving revision 1.5 diff -u -r1.5 tapconvert.py --- twisted/scripts/tapconvert.py 11 Sep 2002 18:59:59 -0000 1.5 +++ twisted/scripts/tapconvert.py 11 Nov 2002 22:02:26 -0000 @@ -57,9 +57,9 @@ self.read() return self.decode() - def read(self, filename): - pass - + def read(self): + self.data = open(self.filename, 'r').read() + def decrypt(self): try: import md5 @@ -73,8 +73,6 @@ class LoaderXML(LoaderCommon): loadmessage = '<Loading file="%s" />' - def read(self, filename): - self.data = open(filename, 'r').read() def decode(self): from twisted.persisted.marmalade import unjellyFromXML sys.modules['__main__'] = EverythingEphemeral() @@ -84,24 +82,22 @@ return application class LoaderPython(LoaderCommon): + def read(self): + pass def decrypt(self): log.msg("Python files are never encrypted") - def decode(self): pyfile = os.path.abspath(self.filename) d = {'__file__': self.filename} - execfile(pyfile, dict, dict) + execfile(pyfile, d, d) try: - application = dict['application'] + application = d['application'] except KeyError: log.msg("Error - python file %s must set a variable named 'application', an instance of twisted.internet.app.Application. No such variable was found!" % repr(self.filename)) sys.exit() return application class LoaderSource(LoaderCommon): - def read(self): - self.data = open(self.filename, 'r').read() - def decode(self): from twisted.persisted.aot import unjellyFromSource sys.modules['__main__'] = EverythingEphemeral() @@ -112,9 +108,6 @@ return application class LoaderTap(LoaderCommon): - def read(self): - self.data = open(self.filename, 'rb').read() - def decode(self): sys.modules['__main__'] = EverythingEphemeral() application = load(StringIO(self.data)) @@ -170,22 +163,25 @@ passphrase = getpass.getpass('Passphrase: ') if options["typein"] == "guess": - if options["in"][-3:] == '.py': - options["typein"] = 'python' - else: - try: - options["typein"] = ({ '.tap': 'pickle', - '.tas': 'source', - '.tax': 'xml' }[options["in"][-4:]]) - except KeyError: - print "Error: Could not guess the type." - return + ext = os.path.splitext(options["in"])[1] + try: + options["typein"] = ({ '.py': 'python', + '.tap': 'pickle', + '.tas': 'source', + '.tax': 'xml' }[ext]) + except KeyError: + print "Error: Could not guess the type." + return if None in [options['in']]: options.opt_help() a = loadPersisted(options["in"], options["typein"], options["decrypt"], passphrase) - a.persistStyle = ({'xml': 'xml', - 'source': 'aot', - 'pickle': 'pickle'} - [options["typeout"]]) + try: + a.persistStyle = ({'xml': 'xml', + 'source': 'aot', + 'pickle': 'pickle'} + [options["typeout"]]) + except KeyError: + print "Error: Unsupported output type." + return savePersisted(a, filename=options["out"], encrypted=options["encrypt"])

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[Twisted-Python] Lore with PIL
by Cory Dodt 11 Nov '02

11 Nov '02

I'm in the process of adapting Lore for the documentation on my project. I've subclassed it, and attached my work. I decided not to do this as a patch after all; the changes should be very easy to drop into the lore core if this turns out to be useful. What do this script and module do? * Convert lore-html to latex (like html2latex and latex.py) What does it do differently (see Advantages for the reasons why)? 1) Images are converted to png instead of eps before for use in the \includegraphics command. (Images that start as png are unchanged.) 2) Images are automatically formatted to 6.5in wide, maintaining aspect ratio. What are the advantages? 1) Works anywhere PIL is available / eliminates dependency on pngtopnm 2) Because PIL supports so many formats, the subclass now supports a boatload of image formats instead of just png. 3) Resulting image quality is better, although it can still improve more. 4) Images don't flow outside the margins Notes on Image Quality: I achieved the best quality by converting my .dia's to .eps and including .eps directly. Since these are vector graphics, the quality is perfect, to the resolution of the pdf itself; but when I did it this way, the fonts in the diagrams were mapped to different fonts that overflowed their boxes and made the diagram unreadable. Next best was to convert dia=>eps=>png (using ImageMagick's convert utility in the shell) then including the png. This could improve if I could figure out how to make includegraphics use a sensible DPI when it does its conversion to dvi. Worst was dia=>eps=>png=>eps, for reasons that are not obvious to me. Both png and eps are non-lossy, so the last two conversion paths should have equal quality, but they don't. What isn't right yet? 1) visitNode_img() always uses png as the target extension, and 2) convert_any() assumes this. convert_any() will fail for certain target image formats because the mode ("""im.convert('RGB')...""") has to match the target format. This can be fixed with a simple exception handler (TODO). 3) Images should be formatted to a width of (pagewidth-leftmargin-rightmagin), instead of a hardcoded 6.5in (which assumes, among other things, letter-sized paper). I'm not latex guru enough to make this work yet. Other notes: It looks like the .eps in Twisted doc isn't being generated from dia during process-docs. This is very easy to do in batch, even without an X server; ask me if anyone wants to see my mklore script. #------------ #pilhtml2latex.py #----snip---- """A replacement for html2latex which imports pillatex if it exists.""" # # Copyright (C) 2002 Fresno County Office of Education # # Adapted from html2latex, which is in Twisted (http://twistedmatrix.com). # # This library is free software; you can redistribute it and/or # modify it under the terms of version 2.1 of the GNU Lesser General Public # License as published by the Free Software Foundation. import os from twisted.lore import texi, docbook import pillatex from twisted.python import usage class Options(usage.Options): optFlags = [['section', 's', 'Generate a section, not an article'], ['texi', 'i', 'Generate a Texinfo section'], ['docbook', 'c', 'Generate a Docbook section']] optParameters = [['dir', 'd', None, 'Directory relative to which references' ' will be taken']] def parseArgs(self, *files): self['files'] = files def run(): opt = Options() opt.parseOptions() ext = ".tex" if opt['section']: klass = pillatex.SectionLatexSpitter elif opt['texi']: klass = texi.TexiSpitter ext = '.texinfo' elif opt['docbook']: klass = docbook.DocbookSpitter ext = '.xml' else: klass = pillatex.LatexSpitter for file in opt['files']: fout = open(os.path.splitext(file)[0]+ext, 'w') dir = opt['dir'] or os.path.dirname(file) spitter = klass(fout.write, dir, os.path.basename(file)) pillatex.processFile(spitter, open(file)) if __name__ == '__main__': run() #----snip---- pillatex.py #----snip---- """A substitute for twisted.lore.latex, using PIL to convert instead of pngtopnm.""" # # Copyright (C) 2002 Fresno County Office of Education # # This library is free software; you can redistribute it and/or # modify it under the terms of version 2.1 of the GNU Lesser General Public # License as published by the Free Software Foundation. from twisted.lore import latex from twisted.lore.latex import processFile import os.path from PIL import Image class ImageConverter: def convert_any(self, src, target): im=Image.open(src) im.convert('RGB').save(target) convert_eps=convert_jpg=convert_jpeg=convert_bmp=convert_dib= \ convert_ppm=convert_gif=convert_tif=convert_tiff= \ convert_xpm=convert_xbm=convert_psd=convert_any def convert_png(self, src, target): pass def visitNode_img(self, node): fileName = os.path.join(self.currDir, node.getAttribute('src')) target, ext = os.path.splitext(fileName) m = getattr(self, 'convert_'+ext[1:], None) if not m: return target = os.path.join(self.currDir, os.path.basename(target)+'.png') m(fileName, target) target = os.path.basename(target) self.writer('\\includegraphics[width=6.5in]{%s}\n' % target) class LatexSpitter(ImageConverter, latex.LatexSpitter): pass class SectionLatexSpitter(ImageConverter, latex.SectionLatexSpitter): pass __________________________________________________ Do you Yahoo!? U2 on LAUNCH - Exclusive greatest hits videos http://launch.yahoo.com/u2

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[Twisted-Python] Erasing strings from memory?
by Paul Swartz 11 Nov '02

11 Nov '02

I'm working on a SSH client/server for Twisted, and some of the things the client needs to work with are passwords both for login and for private keys, and then the decrypted keys. Obviously, storing these in memory leads to the possibility of acessing them and thereby compromising the user. Is there a way to overwrite the data, or otherwise erase it from memory? -p -- Paul Swartz (o_ http://twistedmatrix.com/users/z3p.twistd/ //\ z3p(a)twistedmatrix.com V_/_ AIM: Z3Penguin

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[Twisted-Python] ANN: CVSToys 1.0.0
by Kevin Turner 11 Nov '02

11 Nov '02

How do I stay informed about changes to the repository? How can I keep a checked-out working copy up to date? How can I keep a back-up of my repository off site? . . . Twisted Matrix Laboratories has been using CVSToys to keep track of their CVS repository for the past year, and now CVSToys is being released to the general public for the first time. FreshCVS ("the biggest best and only toy we've got"), working in conjunction with CVS's 'loginfo' hook, will perform actions in response to a commit. Unlike 'loginfo' alone, which will only execute the first matching command it finds, FreshCVS's flexible configuration allows for any number of actions to take place. Actions include notification by mail (with diffs), chat service, and web (both HTML and RSS), updating a working copy, and rsync to backup. Another key feature of FreshCVS notifications is that you receive one per commit, not one for each directory of the commit as loginfo-triggered scripts are prone to do. FreshCVS is extensible with Python, and you may also publish notifications by a Perspective Broker network service, allowing 3rd party clients to listen in. More information and downloads may be found at http://purl.net/net/CVSToys CVSToys is open source software. Share and enjoy, - Kevin Turner, Maintainer acapnotic(a)twistedmatrix.com, Acapnotic on #twisted of irc.freenode.net. Other links: Concurrent Versions System (CVS): http://www.cvshome.org/ Python: http://www.python.org/ Twisted: http://twistedmatrix.com/

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[Twisted-Python] Re: [Twisted-commits] Support --version
by Christopher Armstrong 11 Nov '02

11 Nov '02

On Sun, Nov 10, 2002 at 04:45:39AM -0600, moshez CVS wrote: > Modified files: > Twisted/twisted/python/usage.py 1.35 1.36 > > Log message: > Support --version This makes no sense. The Twisted version has nothing to do with the version of usage.Options-using applications. -- Christopher Armstrong << radix(a)twistedmatrix.com >> http://twistedmatrix.com/users/radix.twistd/

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[Twisted-Python] An unexpected interaction
by Jp Calderone 09 Nov '02

09 Nov '02

I've just discovered some unfortunate behavior when dirdbm and rebuild are combined (as I have recently combined them in Pynfo). It is easily duplicated: from twisted.persisted import dirdbm from twisted.python import rebuild s = dirdbm.Shelf('dirdbm.rebuild.test') s['key'] = 'value' rebuild.rebuild(dirdbm) print s['key'] Investigating with pdb, I discovered: > /home/exarkun/projects/python/Twisted/twisted/persisted/dirdbm.py(90)_readFile() -> f = _open(path, "rb") (Pdb) next OSError: (17, 'File exists', '/home/exarkun/test/dirdbm.rebuild.test/a2V5_') I don't really know where to go from here. Does anyone have any ideas? Jp -- <Greatnuts> someone gave me bad advice this morning <Greatnuts> told me to use twm <Greatnuts> had to reformat <Greatnuts> just to get it off -- 7:00pm up 7 days, 5:52, 8 users, load average: 0.11, 0.15, 0.10

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[Twisted-Python] Another patch for twisted-im
by screwtape＠froup.com 08 Nov '02

08 Nov '02

This one's dead simple, and shouldn't cause any discussion. :) -- ___________ ____________________________ | Screwtape | Reply-To: munged on Usenet |________ ______ ____ __ _ _ _ | | I don't usually .sig people in newsgroups. -- Charles Lieberman |

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[Twisted-Python] distutils and twisted
by Alexandre Fayolle 08 Nov '02

08 Nov '02

Hi, What's the prefered way to use distutils to package a twisted plugin. The key question being, how do you install the plugins.tml file ? Is there any distutils extensions available ? -- Alexandre

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